1/*
2 * Machine driver for EVAL-ADAV801 and EVAL-ADAV803 on Analog Devices bfin
3 * evaluation boards.
4 *
5 * Copyright 2011 Analog Devices Inc.
6 * Author: Lars-Peter Clausen <lars@metafoo.de>
7 *
8 * Licensed under the GPL-2 or later.
9 */
10
11#include <linux/init.h>
12#include <linux/platform_device.h>
13#include <linux/module.h>
14#include <sound/core.h>
15#include <sound/pcm.h>
16#include <sound/soc.h>
17
18#include "../codecs/adav80x.h"
19
20static const struct snd_soc_dapm_widget bfin_eval_adav80x_dapm_widgets[] = {
21	SND_SOC_DAPM_LINE("Line Out", NULL),
22	SND_SOC_DAPM_LINE("Line In", NULL),
23};
24
25static const struct snd_soc_dapm_route bfin_eval_adav80x_dapm_routes[] = {
26	{ "Line Out", NULL, "VOUTL" },
27	{ "Line Out", NULL, "VOUTR" },
28
29	{ "VINL", NULL, "Line In" },
30	{ "VINR", NULL, "Line In" },
31};
32
33static int bfin_eval_adav80x_hw_params(struct snd_pcm_substream *substream,
34	struct snd_pcm_hw_params *params)
35{
36	struct snd_soc_pcm_runtime *rtd = substream->private_data;
37	struct snd_soc_dai *codec_dai = rtd->codec_dai;
38	int ret;
39
40	ret = snd_soc_dai_set_pll(codec_dai, ADAV80X_PLL1, ADAV80X_PLL_SRC_XTAL,
41			27000000, params_rate(params) * 256);
42	if (ret)
43		return ret;
44
45	ret = snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_PLL1,
46			params_rate(params) * 256, SND_SOC_CLOCK_IN);
47
48	return ret;
49}
50
51static int bfin_eval_adav80x_codec_init(struct snd_soc_pcm_runtime *rtd)
52{
53	struct snd_soc_dai *codec_dai = rtd->codec_dai;
54
55	snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_SYSCLK1, 0,
56	    SND_SOC_CLOCK_OUT);
57	snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_SYSCLK2, 0,
58	    SND_SOC_CLOCK_OUT);
59	snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_SYSCLK3, 0,
60	    SND_SOC_CLOCK_OUT);
61
62	snd_soc_dai_set_sysclk(codec_dai, ADAV80X_CLK_XTAL, 2700000, 0);
63
64	return 0;
65}
66
67static struct snd_soc_ops bfin_eval_adav80x_ops = {
68	.hw_params = bfin_eval_adav80x_hw_params,
69};
70
71static struct snd_soc_dai_link bfin_eval_adav80x_dais[] = {
72	{
73		.name = "adav80x",
74		.stream_name = "ADAV80x HiFi",
75		.cpu_dai_name = "bfin-i2s.0",
76		.codec_dai_name = "adav80x-hifi",
77		.platform_name = "bfin-i2s-pcm-audio",
78		.init = bfin_eval_adav80x_codec_init,
79		.ops = &bfin_eval_adav80x_ops,
80		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
81				SND_SOC_DAIFMT_CBM_CFM,
82	},
83};
84
85static struct snd_soc_card bfin_eval_adav80x = {
86	.name = "bfin-eval-adav80x",
87	.owner = THIS_MODULE,
88	.dai_link = bfin_eval_adav80x_dais,
89	.num_links = ARRAY_SIZE(bfin_eval_adav80x_dais),
90
91	.dapm_widgets		= bfin_eval_adav80x_dapm_widgets,
92	.num_dapm_widgets	= ARRAY_SIZE(bfin_eval_adav80x_dapm_widgets),
93	.dapm_routes		= bfin_eval_adav80x_dapm_routes,
94	.num_dapm_routes	= ARRAY_SIZE(bfin_eval_adav80x_dapm_routes),
95};
96
97enum bfin_eval_adav80x_type {
98	BFIN_EVAL_ADAV801,
99	BFIN_EVAL_ADAV803,
100};
101
102static int bfin_eval_adav80x_probe(struct platform_device *pdev)
103{
104	struct snd_soc_card *card = &bfin_eval_adav80x;
105	const char *codec_name;
106
107	switch (platform_get_device_id(pdev)->driver_data) {
108	case BFIN_EVAL_ADAV801:
109		codec_name = "spi0.1";
110		break;
111	case BFIN_EVAL_ADAV803:
112		codec_name = "adav803.0-0034";
113		break;
114	default:
115		return -EINVAL;
116	}
117
118	bfin_eval_adav80x_dais[0].codec_name = codec_name;
119
120	card->dev = &pdev->dev;
121
122	return snd_soc_register_card(&bfin_eval_adav80x);
123}
124
125static int bfin_eval_adav80x_remove(struct platform_device *pdev)
126{
127	struct snd_soc_card *card = platform_get_drvdata(pdev);
128
129	snd_soc_unregister_card(card);
130
131	return 0;
132}
133
134static const struct platform_device_id bfin_eval_adav80x_ids[] = {
135	{ "bfin-eval-adav801", BFIN_EVAL_ADAV801 },
136	{ "bfin-eval-adav803", BFIN_EVAL_ADAV803 },
137	{ },
138};
139MODULE_DEVICE_TABLE(platform, bfin_eval_adav80x_ids);
140
141static struct platform_driver bfin_eval_adav80x_driver = {
142	.driver = {
143		.name = "bfin-eval-adav80x",
144		.pm = &snd_soc_pm_ops,
145	},
146	.probe = bfin_eval_adav80x_probe,
147	.remove = bfin_eval_adav80x_remove,
148	.id_table = bfin_eval_adav80x_ids,
149};
150
151module_platform_driver(bfin_eval_adav80x_driver);
152
153MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
154MODULE_DESCRIPTION("ALSA SoC bfin adav80x driver");
155MODULE_LICENSE("GPL");
156